Suction electrode



FIG. 1 is a front perspective view, partially in section, of a suction electrode showing my new design;

FIG. 2 is an exploded front perspective view thereof with portions omitted for ease of illustration;

FIG. 3 is a front perspective view of the binding post member separately disclosed for clarity of illustration; and

FIG. 4 is an exploded perspective view of the cup and contact pad member separately disclosed for clarity of illustration. 

The ornamental design for a suction electrode, as shown and described. 